In　order　to　improve　the　quality　of　reclaimed　water,　a　comparative　study　was　conducted　under　different　C/N　and　HRT　conditions　to　examine　the　effect　on　advanced　nitrogen　and　phosphorus　removal　by　using　sponge　iron/sulfur　composite　fillers　and　low　electrical　current.　The　results　indicated　that　both　the　sponge　iron/sulfur　composite　fillers　and　low　electrical　current　treatment　can　strengthen　the　removal　efficiency　of　nitrogen　and　phosphorus,　and　their　combination　can　further　stabilize　the　pH　value　of　7.2~8.5　in　the　denitrification　system.　It　was　found　that　the　removal　of　total　nitrogen　(TN)　was　mainly　depended　on　the　process　of　heterotrophic　denitrification,　hydrogen　autotrophic　denitrification　and　sulfur　autotrophic　denitrification,　while　94.04%　of　the　total　phosphorus　(TP)　were　removed　in　the　form　of　iron-phosphate　precipitation.　Furthermore,　biofilm　was　taken　from　the　fillers　to　build　the　bacterial　16S　rRNA　gene　clone　library　by　adopting　the　high-throughput　sequencing　technologies.　The　results　showed　that　the　bacteria　which　can　use　both　organic　carbon　and　elemental　hydrogen　as　its　electron　donor　for　denitrification　accounted　for　29.47%　of　the　bacterial　community　in　the　sponge　iron　fillers　system.　The　proportion　of　Thiobacillus　bacteria　which　can　use　elemental　sulfur　as　its　electron　donor　reached　60.47%　and　40.62%　of　the　bacterial　community　in　the　system　of　sponge　iron/sulfur　composite　fillers　and　the　combined　system　of　composite　fillers　with　low　electrical　current,　respectively.　Therefore,　there　are　obvious　advantages　of　employing　sponge　iron/sulfur　composite　fillers　and　low　electrical　current　to　enhance　the　effect　of　advanced　nitrogen　and　phosphorus　removal　from　reclaimed　water.　©　2016,　Chinese　Society　for　Environmental　Sciences.　All　right　reserved.